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Everything Dirt Bike
General Dirt Bike
twin cylinder
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<blockquote data-quote="cleonard" data-source="post: 74197" data-attributes="member: 21"><p>Depends on the engine design. I have a vertical twin Honda and even though it might seem counter intuitive the pistons move up and down together. Each cylinder fires in alternation, but there is only one coil so they get a spark on every revolution. V-twins need separate ignitions as the pistons are not synched. In line fours fire every half turn and the older ones only had two coils.</p></blockquote><p></p>
[QUOTE="cleonard, post: 74197, member: 21"] Depends on the engine design. I have a vertical twin Honda and even though it might seem counter intuitive the pistons move up and down together. Each cylinder fires in alternation, but there is only one coil so they get a spark on every revolution. V-twins need separate ignitions as the pistons are not synched. In line fours fire every half turn and the older ones only had two coils. [/QUOTE]
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Everything Dirt Bike
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twin cylinder
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